Circulatory System

Question 1

Function of circulatory system

Answer 1

Transport oxygen and nutrients to cells

Transport CO2 and waste form cells

Question 2

Blood vessels

Answer 2

Arteries : Thick and elastic walls, withstand the pressure, carry oxygenated blood away from heart

Veins : Thin walls but valves to stop back flow of blood, carry deoxygenated blood to heart

Capillaries : 1 cell thick wall to transport nutrients in and out the cells

Question 3

Systemic and pulmonary circulations

Answer 3

Systemic
Carries nutrients and oxygen to body and removes waste (left side + body)

Pulmonary
Carries de-oxygenated blood to the lungs and oxygenated blood to heart (right side + lungs)

Question 4

Atrioventricular valves

Answer 4

Bicuspid and tricuspid valves

Tricuspid valve connects the RA and RV
Bicuspid valve connects the LA and LV

Question 5

Semilunar valves

Answer 5

Pulmonary and aortic

Question 6

Use of valves

Answer 6

To prevent back flow

Question 7

Cardiac cycle

Answer 7

Is the cycle for one heartbeat
Contains three stages
Atrial systole (contraction)
Ventricular systole (contraction)
Diastole (relaxation)

Question 8

Atrial systole (1)

Answer 8

Atria are contracting and pushing blood into the ventricles, the ventricles are relaxing

Question 9

Ventricular systole (2)

Answer 9

Ventricle are contracting and pushing blood into the aorta/pulmonary arteries, the atria are relaxing

Question 10

Diastole (3)

Answer 10

Both the atria and the ventricle are relaxing

Question 11

Cardiac output

Answer 11

Measures how much blood your heart moves in one minutes
Stroke volume is the volume of blood that your heart pushes out in one beat
Heart rate is the number of times that your heat beats in a singular minute